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Clockwise rotations recorded in redbeds from the Jinggu Basin of northwestern Indochina

文献类型：期刊论文

作者Li, Shihu1; Yang, Zhenyu2; Deng, Chenglong1; He, Huaiyu3; Qin, Huafeng1; Sun, Lu1; Yuan, Jie1,4; van Hinsbergen, Douwe J. J.5; Krijgsman, Wout6; Dekkers, Mark J.6
刊名GEOLOGICAL SOCIETY OF AMERICA BULLETIN
出版日期2017-09-01
卷号129期号:9-10页码:1100-1122
ISSN号0016-7606
DOI10.1130/B31637.1
文献子类Article
英文摘要Paleomagnetic data have been used to infer clockwise rotations and significant southward motion of the Indochina block during Cenozoic extrusion from the India-Asia collision zone. Because the Cenozoic of the Indochina block has been sparsely sampled to date and is key to determining the timing of this tectonic motion, we performed an extensive paleomagnetic study on Paleocene to Oligocene redbeds and middle Miocene sandy silts from the Jinggu Basin (23.5 degrees N, 100.7 degrees E), in northern Indochina. Paleomagnetic results from the redbeds pass fold tests, but they show exclusively normal polarity. There is controversy, however, on the age assignment to the lower part of the succession. If the age of the redbeds is indeed Paleogene, this indicates a prefolding remagnetization associated with Oligocene deformation of the Indochina block. If the age of the redbeds would be Late Cretaceous, their magnetization may be primary, and deposition could have taken place during the Cretaceous normal superchron. However, the abundance of secondary hematite in the redbeds in combination with the biostratigraphy, which indicates a Paleogene age for at least the upper two formations of the redbeds in the Jinggu Basin, implies a pervasive remagnetization. The middle Miocene sediments pass both the fold test and the reversals test and contain magnetite as well as hematite as carriers, suggesting a primary magnetization. Our large data set from the redbeds (> 2000 paleomagnetic directions) demonstrates an similar to 30 degrees-35 degrees clockwise rotation of the Jinggu Basin with respect to Eurasia, for both scenarios, i.e., when compared to a ca. 100 Ma pole (if the redbeds carry a primary natural remanent magnetization) or to a ca. 30 Ma pole (if the sequence is remagnetized). The middle Miocene results, however, indicate that the Jinggu Basin experienced no significant (2 degrees +/- 5.6 degrees) rotation with respect to Eurasia. Since no major deformation has occurred within northern Indochina during Late Cretaceous to Eocene times, our results reflect a major clockwise rotation of the Indochina block during its Oligocene to early Miocene extrusion from the India-Asia collision zone.
WOS关键词RIVER SHEAR ZONE ; SHAN-THAI BLOCK ; LATE PALEOZOIC REMAGNETIZATION ; EAST-CENTRAL TIBET ; MAE MOH BASIN ; SEDIMENTARY-ROCKS ; PALEOMAGNETIC DATA ; NORTHERN THAILAND ; TECTONIC DEFORMATION ; ASIA COLLISION
WOS研究方向Geology
语种英语
WOS记录号WOS:000409330000005
出版者GEOLOGICAL SOC AMER, INC
资助机构National Natural Science Foundation of China(41404056) ; National Natural Science Foundation of China(41404056) ; State Key Laboratory of Lithospheric Evolution grant(11431780) ; State Key Laboratory of Lithospheric Evolution grant(11431780) ; China Postdoctoral Science Foundation grant(127803) ; China Postdoctoral Science Foundation grant(127803) ; ERC (European Research Council) Starting Grant(306810) ; ERC (European Research Council) Starting Grant(306810) ; NWO (Netherlands Organization for Scientific Research) VIDI grant(864.11.004) ; NWO (Netherlands Organization for Scientific Research) VIDI grant(864.11.004) ; National Natural Science Foundation of China(41404056) ; National Natural Science Foundation of China(41404056) ; State Key Laboratory of Lithospheric Evolution grant(11431780) ; State Key Laboratory of Lithospheric Evolution grant(11431780) ; China Postdoctoral Science Foundation grant(127803) ; China Postdoctoral Science Foundation grant(127803) ; ERC (European Research Council) Starting Grant(306810) ; ERC (European Research Council) Starting Grant(306810) ; NWO (Netherlands Organization for Scientific Research) VIDI grant(864.11.004) ; NWO (Netherlands Organization for Scientific Research) VIDI grant(864.11.004) ; National Natural Science Foundation of China(41404056) ; National Natural Science Foundation of China(41404056) ; State Key Laboratory of Lithospheric Evolution grant(11431780) ; State Key Laboratory of Lithospheric Evolution grant(11431780) ; China Postdoctoral Science Foundation grant(127803) ; China Postdoctoral Science Foundation grant(127803) ; ERC (European Research Council) Starting Grant(306810) ; ERC (European Research Council) Starting Grant(306810) ; NWO (Netherlands Organization for Scientific Research) VIDI grant(864.11.004) ; NWO (Netherlands Organization for Scientific Research) VIDI grant(864.11.004) ; National Natural Science Foundation of China(41404056) ; National Natural Science Foundation of China(41404056) ; State Key Laboratory of Lithospheric Evolution grant(11431780) ; State Key Laboratory of Lithospheric Evolution grant(11431780) ; China Postdoctoral Science Foundation grant(127803) ; China Postdoctoral Science Foundation grant(127803) ; ERC (European Research Council) Starting Grant(306810) ; ERC (European Research Council) Starting Grant(306810) ; NWO (Netherlands Organization for Scientific Research) VIDI grant(864.11.004) ; NWO (Netherlands Organization for Scientific Research) VIDI grant(864.11.004)
源URL[http://ir.iggcas.ac.cn/handle/132A11/61902]  
专题地质与地球物理研究所_岩石圈演化国家重点实验室
通讯作者Li, Shihu
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
2.Capital Normal Univ, Coll Resources Environm & Tourism, Beijing 100048, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, CAS Key Lab Earth & Planetary Phys, Beijing 100029, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
5.Univ Utrecht, Dept Earth Sci, NL-3584 CD Utrecht, Netherlands
6.Univ Utrecht, Dept Earth Sci, Paleomagnet Lab Ft Hoofddijk, Budapestlaan 17, NL-3584 CD Utrecht, Netherlands
推荐引用方式
GB/T 7714		 Li, Shihu,Yang, Zhenyu,Deng, Chenglong,et al. Clockwise rotations recorded in redbeds from the Jinggu Basin of northwestern Indochina[J]. GEOLOGICAL SOCIETY OF AMERICA BULLETIN,2017,129(9-10):1100-1122.
APA Li, Shihu.,Yang, Zhenyu.,Deng, Chenglong.,He, Huaiyu.,Qin, Huafeng.,...&Zhu, Rixiang.(2017).Clockwise rotations recorded in redbeds from the Jinggu Basin of northwestern Indochina.GEOLOGICAL SOCIETY OF AMERICA BULLETIN,129(9-10),1100-1122.
MLA Li, Shihu,et al."Clockwise rotations recorded in redbeds from the Jinggu Basin of northwestern Indochina".GEOLOGICAL SOCIETY OF AMERICA BULLETIN 129.9-10(2017):1100-1122.

入库方式： OAI收割

来源：地质与地球物理研究所

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